asterisk users - Jul 2004 - Originate to IAXComm problem once again

I am sending this again since I haven't get it back for twelve hours:

When I originate call to IAXComm, more or less one of tree calls fails
for no aparent reason. Originating calls to SIP clients works as
expected. Anybody has similar problems? Is it asterisk or client problem?

Asterisk log:
Jul 15 00:00:04 DEBUG[1179663]: manager.c:1018 process_message: Manager
received command 'Originate'
Jul 15 00:00:04 DEBUG[180235]: chan_iax2.c:5057 socket_read: Received
iseqno 3 not within window 0->1
Jul 15 00:00:06 DEBUG[180235]: chan_iax2.c:5057 socket_read: Received
iseqno 3 not within window 0->1
Jul 15 00:00:14 DEBUG[180235]: chan_iax2.c:5057 socket_read: Received
iseqno 3 not within window 0->2
Jul 15 00:00:16 DEBUG[180235]: chan_iax2.c:5057 socket_read: Received
iseqno 3 not within window 0->2
Jul 15 00:00:16 DEBUG[180235]: chan_iax2.c:5057 socket_read: Received
iseqno 3 not within window 0->2
Jul 15 00:00:34 DEBUG[1441809]: chan_iax2.c:2269 iax2_hangup: We're
hanging up IAX2[kamyk]/3 now...
    -- Hungup 'IAX2[kamyk]/3'
    -- Executing Answer("OutgoingSpoolFailed", "") in new
stack
  == Spawn extension (meetme, failed, 1) exited non-zero on
'OutgoingSpoolFailed'
    -- Executing Answer("OutgoingSpoolFailed", "") in new
stack
  == Spawn extension (meetme, h, 1) exited non-zero on
'OutgoingSpoolFailed'


Manager events:
2004-07-14 23:59:06,917 DEBUG Newchannel, {'Callerid':
'<unknown>',
'State': 'Down', 'Event': 'Newchannel',
'Channel': 'IAX2[kamyk]/3',
'Uniqueid': '1089842404.75'}
2004-07-14 23:59:06,919 DEBUG Newchannel, {'Callerid':
'<unknown>',
'State': 'Ringing', 'Event': 'Newchannel',
'Channel': 'IAX2[kamyk]/3',
'Uniqueid': '1089842404.75'}
2004-07-14 23:59:36,909 DEBUG Hangup, {'Cause': '0',
'Event': 'Hangup',
'Channel': 'IAX2[kamyk]/3', 'Uniqueid':
'1089842404.75'}
2004-07-14 23:59:36,918 DEBUG Newexten, {'Uniqueid':
'1089842434.76',
'Extension': 'failed', 'Priority': '1',
'Context': 'meetme', 'Event':
'Newexten', 'Channel': 'OutgoingSpoolFailed'}
2004-07-14 23:59:36,919 DEBUG Hangup, {'Cause': '0',
'Event': 'Hangup',
'Channel': 'OutgoingSpoolFailed', 'Uniqueid':
'1089842434.76'}
2004-07-14 23:59:36,921 DEBUG OriginateFailure, {'Context':
'meetme',
'Exten': 'kolejka', 'Event': 'OriginateFailure',
'Channel':'IAX2/kamyk'}

Maciej Kaminski